CN101571064A - Car main muffler structure - Google Patents
Car main muffler structure Download PDFInfo
- Publication number
- CN101571064A CN101571064A CNA2009101040880A CN200910104088A CN101571064A CN 101571064 A CN101571064 A CN 101571064A CN A2009101040880 A CNA2009101040880 A CN A2009101040880A CN 200910104088 A CN200910104088 A CN 200910104088A CN 101571064 A CN101571064 A CN 101571064A
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- China
- Prior art keywords
- cylindrical shell
- weep hole
- main muffler
- drain hole
- muffler structure
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Abstract
The invention relates to a car main muffler structure; the main muffler structure is provided with a cylindrical shell which is a two-tier structure; the two ends of the cylindrical shell are respectively sealed by a front end plate and a back end plate; the inside of the cylindrical shell is divided into three chambers by two clapboards provided with holes; the three chambers are respectively a low pressure chamber, a medium pressure chamber and a high pressure chamber from front to back; a first drain hole is arranged at the bottom part of the inner layer of the cylindrical shell; a second drain hole is arranged at the bottom part of the outer layer of the cylindrical shell; the second drain hole is arranged beside the first drain hole; the inside of the cylindrical shell is communicated with the outside by the first drain hole, clearance between the inner layer and outer layer of the cylindrical shell and the second drain hole. The car main muffler structure of the invention can discharge water resulting from condensation of air in the cylindrical shell in a timely manner, prevents generation of acid ponded water, effectively protect a core, the clapboards, the inner wall of the cylindrical shell, an air inlet tube and an air outlet tube from being eroded by the acid ponded water, and produces no other noises in the premise of hardly increasing cost; thus meeting operating requirements of the main muffler, not only saving maintenance cost of the users but also lengthening service life of the main muffler.
Description
Technical field
The present invention relates to a kind of automobile component, particularly the main muffler on the automobile.
Background technique
Main muffler is the important component on the automobile, works to eliminate exhaust noise.Traditional main muffler comprises parts such as cylindrical shell, suction tude, outlet pipe, end plate and dividing plate, its middle cylinder body is formed by two-layer stacked corrosion resistant plate bound edge, the rear and front end of cylindrical shell is sealed by end plate, the inside of cylindrical shell is separated into three chambers by two dividing plates with holes, is followed successively by low-pressure cavity, middle pressure chamber and hyperbaric chamber from front to back.Suction tude behind air communication overcompression and the expansion consumed energy, is discharged the waste gas introducing inner barrel of engine emission from outlet pipe, thereby reaches the effect of noise reduction.
Under the situation of engine operation, the temperature of main muffler inner barrel is a lot of with respect to having reduced near the engine exhaust mouth, and condensation can take place the portion gas in the main muffler cylindrical shell like this, very easily produces ponding.Owing to from the high-temperature gas that motor is discharged, mainly contain C, H, N, contain a certain amount of S element especially, S is sulfuric acid a little less than the cold just formation through chance behind the three-element catalytic, therefore the ponding in the main muffler is acid, if untimely discharge, can cause corrosion to metal, cause the corrosion of silencing apparatus core body and produce abnormal sound, increase noise; Dividing plate, cylinder inboard wall, suction tude and outlet pipe can be damaged by the corrosion of acid ponding, have not only increased user's maintenance cost, and have shortened the working life of main muffler.At home, the producer that has prolongs working life of main muffler by using corrosion-resistant material, but this sample loading mode can significantly increase cost of production, and can not thoroughly deal with problems; Abroad, Japan particularly discharges ponding in the main muffler by adopting siphon arrangement, but since complex structure, the assembling difficulty, and can increase cost of production, therefore be difficult to promote the use of.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of car main muffler structure that can in time, effectively discharge ponding.
Technological scheme of the present invention is as follows: a kind of car main muffler structure, comprise cylindrical shell, suction tude, outlet pipe, front end-plate, end plate, first dividing plate and second partition, its middle cylinder body is a double layer construction, the two ends of cylindrical shell are respectively by preceding, the end plate sealing, the inside of cylindrical shell is separated into three chambers by two dividing plates with holes, be followed successively by low-pressure cavity from front to back, middle chamber and the hyperbaric chamber of pressing, its key is: offer first weep hole in the bottom of described cylindrical shell internal layer, the outer field bottom of cylindrical shell offers second weep hole, this second weep hole is positioned at the next door of first weep hole, and the inside of described cylindrical shell is by first weep hole, the gap between the cylindrical shell internal and external layer and second weep hole communicate with the external world.
Because cylindrical shell is formed by two-layer stacked corrosion resistant plate bound edge compacting, has certain clearance between cylindrical shell internal layer and the cylindrical shell skin.The present invention utilizes the gap between the cylindrical shell internal and external layer to carry out structure improvement dexterously, by bottom first weep hole is set at the cylindrical shell internal layer, the outer field bottom of cylindrical shell is provided with second weep hole, first weep hole and the dislocation of second weep hole, gap between the cylindrical shell internal and external layer, form the labyrinth shape drainage channel, in case the condensation of gas Cheng Shuihou in the cylindrical shell like this, will outwards flow out from the labyrinth shape drainage channel, and can not increase noise, and produce thereby guaranteed to no longer include in the cylindrical shell acid ponding, effectively reduce acid ponding corrupting influence, both save user's maintenance cost, improved the working life of main muffler again greatly.
For the ponding that makes three chambers can both be in time, discharge effectively, all offer first weep hole and second weep hole in the bottom of three chambers of above-mentioned cylindrical shell.
Above-mentioned first weep hole and second weep hole are circular hole, and diameter is 3～4mm.The size of weep hole is advisable with 3～4mm, the too small corresponding effects that do not reach, and crossing conference increases noise.
Centre distance on the above-mentioned same chamber between two weep holes is 5～7mm.Be advisable with 5～7mm with the centre distance between a pair of weep hole, too small easy formation clear opening, air communication is crossed this clear opening and is directly discharged, and can produce to utter long and high-pitched sounds, thereby increase noise; Centre distance is excessive, then is unfavorable in time ponding being discharged.
Beneficial effect: the present invention can in time discharge the water that condensation of gas in the cylindrical shell becomes, prevented to produce in the cylindrical shell acid ponding, effectively avoided core body, dividing plate, cylinder inboard wall, suction tude and outlet pipe to be subjected to the corrosion of acid ponding, under the prerequisite that increases cost of production hardly, can not produce other noise yet, meet the usage requirement of main muffler, both saved user's maintenance cost, improved the working life of main muffler again greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the layout schematic representation of weep hole among the present invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1 and Figure 2, the present invention is made of parts such as cylindrical shell 1, suction tude 2, outlet pipe 3, front end-plate 4, end plate 5, first dividing plate 6 and second partitions 7.Its middle cylinder body 1 is a double layer construction, be divided into stainless steel cylinder internal layer 1a and stainless steel cylinder volume surrounding 1b, 1a, 1b are mutually stacked for the inside and outside layer of stainless steel, are pressed into tubular structure by bound edge, have certain clearance between stainless steel cylinder internal layer 1a and the stainless steel cylinder volume surrounding 1b.The front end of described cylindrical shell 1 is by front end-plate 4 sealings, and the rear end of cylindrical shell 1 is by end plate 5 sealings, and the rear end of described suction tude 2 is passed front end-plate 4 and stretched in the cylindrical shell 1, and the front end of outlet pipe 3 passes end plate 5 and also extend in the cylindrical shell 1.The inside of described cylindrical shell 1 is separated into three independent cavity by first dividing plate 6 and second partition 7, is followed successively by low-pressure cavity A, middle pressure chamber B and hyperbaric chamber C from front to back.On first, second dividing plate 6,7, be distributed with through hole, be communicated with by the through hole on first dividing plate 6 between low-pressure cavity A and the middle pressure chamber B, be communicated with by the through hole on the second partition 7 between middle pressure chamber B and the hyperbaric chamber C.
From Fig. 1, Fig. 2 as can be known, bottom at cylindrical shell three chamber A, B, C all offers a pair of weep hole, every pair of weep hole is made up of first weep hole 8 and second weep hole 9, and wherein first weep hole 8 is arranged on the bottom of cylindrical shell internal layer 1a, and second weep hole 9 is arranged on the bottom of the outer 1b of cylindrical shell.Described first weep hole 8 and second weep hole 9 are circular hole, and diameter is 3～4mm, are 5～7mm with the centre distance between a pair of weep hole 8,9, and the size of weep hole and centre distance can be adjusted according to actual needs.The inside of described cylindrical shell communicates with the external world by the gap between first weep hole 8, the cylindrical shell internal and external layer and second weep hole 9.
The present invention is performed such draining:
If condensation of gas Cheng Shuihou in the low-pressure cavity A can compile at the interior diapire of low-pressure cavity A, and, flow to second weep hole 9 by the gap again, discharge from second weep hole 9 at last by in the gap between the inside and outside layer of first weep hole, 8 inflow cylindrical shells 1a, the 1b.Because first weep hole 8 and 9 dislocation of second weep hole, the labyrinth shape drainage channel is formed in the gap between the inside and outside layer of cylindrical shell 1a, 1b, helps condensed water so on the one hand and in time discharges, and has avoided the corrosion influence of acid ponding; On the other hand, can not increase noise, ensure the usability of main muffler.
In press when having condensation of gas to become water among chamber B and the hyperbaric chamber C, the mode of draining is identical with low-pressure cavity A, does not do at this and gives unnecessary details.
Claims (4)
1, a kind of car main muffler structure, comprise cylindrical shell (1), suction tude (2), outlet pipe (3), front end-plate (4), end plate (5), first dividing plate (6) and second partition (7), its middle cylinder body (1) is a double layer construction, the two ends of cylindrical shell (1) are respectively by preceding, end plate (4,5) sealing, the inside of cylindrical shell (1) is by two dividing plates with holes (6,7) be separated into three chambers, be followed successively by low-pressure cavity (A) from front to back, middle chamber (B) and the hyperbaric chamber (C) of pressing, it is characterized in that: offer first weep hole (8) in the bottom of described cylindrical shell internal layer (1a), the bottom of cylindrical shell skin (1b) offers second weep hole (9), this second weep hole (9) is positioned at the next door of first weep hole (8), and the inside of described cylindrical shell is by first weep hole (8), gap between the cylindrical shell internal and external layer and second weep hole (9) communicate with the external world.
2, car main muffler structure according to claim 1 is characterized in that: the bottom at (1) three chamber of described cylindrical shell all offers first weep hole (8) and second weep hole (9).
3, car main muffler structure according to claim 1 and 2 is characterized in that: described first weep hole (8) and second weep hole (9) are circular hole, and diameter is 3～4mm.
4, car main muffler structure according to claim 3 is characterized in that: the centre distance on the described same chamber between two weep holes is 5～7mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101040880A CN101571064A (en) | 2009-06-12 | 2009-06-12 | Car main muffler structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009101040880A CN101571064A (en) | 2009-06-12 | 2009-06-12 | Car main muffler structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101571064A true CN101571064A (en) | 2009-11-04 |
Family
ID=41230516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009101040880A Pending CN101571064A (en) | 2009-06-12 | 2009-06-12 | Car main muffler structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571064A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146826A (en) * | 2011-02-23 | 2011-08-10 | 重庆长安汽车股份有限公司 | Main silencer for air exhaust system of automotive engine |
| CN115324686A (en) * | 2022-07-26 | 2022-11-11 | 上汽通用汽车有限公司 | Silencer used in vehicle exhaust system and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2484339A1 (en) * | 1980-06-17 | 1981-12-18 | Moulin Claude | First or second stage vehicle silencer - has internal baffles with geometry selected to accommodate gas flow |
| JP2005073463A (en) * | 2003-08-27 | 2005-03-17 | Calsonic Kansei Corp | Exhaust system for fuel-cell automobile |
| JP2009013902A (en) * | 2007-07-05 | 2009-01-22 | Honda Motor Co Ltd | Silencer connected to exhaust system of internal combustion engine |
| CN201420589Y (en) * | 2009-06-12 | 2010-03-10 | 力帆实业(集团)股份有限公司 | Main muffler used on vehicle |
-
2009
- 2009-06-12 CN CNA2009101040880A patent/CN101571064A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2484339A1 (en) * | 1980-06-17 | 1981-12-18 | Moulin Claude | First or second stage vehicle silencer - has internal baffles with geometry selected to accommodate gas flow |
| JP2005073463A (en) * | 2003-08-27 | 2005-03-17 | Calsonic Kansei Corp | Exhaust system for fuel-cell automobile |
| JP2009013902A (en) * | 2007-07-05 | 2009-01-22 | Honda Motor Co Ltd | Silencer connected to exhaust system of internal combustion engine |
| CN201420589Y (en) * | 2009-06-12 | 2010-03-10 | 力帆实业(集团)股份有限公司 | Main muffler used on vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146826A (en) * | 2011-02-23 | 2011-08-10 | 重庆长安汽车股份有限公司 | Main silencer for air exhaust system of automotive engine |
| CN102146826B (en) * | 2011-02-23 | 2012-11-07 | 重庆长安汽车股份有限公司 | Main silencer for air exhaust system of automotive engine |
| CN115324686A (en) * | 2022-07-26 | 2022-11-11 | 上汽通用汽车有限公司 | Silencer used in vehicle exhaust system and vehicle |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20091104 |
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| RJ01 | Rejection of invention patent application after publication |